Hands Gabrielle L, Larson Eric, Stepp Cara E
Department of Speech, Language, and Hearing Sciences, Boston University, Boston, MA, USA.
Institute for Learning and Brain Sciences, University of Washington, Seattle, WA, USA.
Hum Mov Sci. 2014 Jun;35:145-55. doi: 10.1016/j.humov.2014.01.003. Epub 2014 Feb 12.
The purpose of this study was to determine the effect of augmentative visual feedback training on auditory-motor performance. Thirty-two healthy young participants used facial surface electromyography (sEMG) to control a human-machine interface (HMI) for which the output was vowel synthesis. An auditory-only (AO) group (n=16) trained with auditory feedback alone and an auditory-visual (AV) group (n=16) trained with auditory feedback and progressively-removed visual feedback. Subjects participated in three training sessions and one testing session over 3days. During the testing session they were given novel targets to test auditory-motor generalization. We hypothesized that the auditory-visual group would perform better on the novel set of targets than the group that trained with auditory feedback only. Analysis of variance on the percentage of total targets reached indicated a significant interaction between group and session: individuals in the AV group performed significantly better than those in the AO group during early training sessions (while using visual feedback), but no difference was seen between the two groups during later sessions. Results suggest that augmentative visual feedback during training does not improve auditory-motor performance.
本研究的目的是确定增强视觉反馈训练对听觉-运动表现的影响。32名健康的年轻参与者使用面部表面肌电图（sEMG）来控制一个人机界面（HMI），该界面的输出为元音合成。一个仅听觉（AO）组（n = 16）仅通过听觉反馈进行训练，一个听觉-视觉（AV）组（n = 16）通过听觉反馈和逐渐去除的视觉反馈进行训练。受试者在3天内参加了三次训练课程和一次测试课程。在测试课程中，他们被给予新的目标以测试听觉-运动泛化能力。我们假设听觉-视觉组在新的目标组上的表现会比仅通过听觉反馈训练的组更好。对达到的总目标百分比进行方差分析表明，组和课程之间存在显著交互作用：在早期训练课程中（使用视觉反馈时），AV组的个体表现明显优于AO组，但在后期课程中两组之间没有差异。结果表明，训练期间的增强视觉反馈并不能提高听觉-运动表现。
